DE2854670A1 - SWITCHING ARRANGEMENT FOR AN ELECTRIC MOTOR REVERSIBLE FROM A VOLTAGE SOURCE FOR DRIVING A WINDOW LIFTING SYSTEM IN MOTOR VEHICLES - Google Patents

Description

2854S7Q

- / - A 12 558

The invention is based on a switching arrangement according to the Features of the preamble of claim 1.

Especially in motor vehicles of the comfort class are increasing Scope of electromotive window lifting systems and so-called central door locking systems installed. The electric motor the window lift system is usually controlled via a polarity reversal switch attached to the inside of the door. The electromagnetic control elements of the door locking system are controlled via an additional switch that can be operated with the vehicle key. So far, both systems have been separated from each other, which is not only mechanical, but also considerable circuitry Effort means. After all, this system does not meet the requirements that are customary today ease of use and safety. Since locking the motor vehicle only makes sense If all windows are closed, the driver would have to operate four polarity reversal switches in the known motor vehicles in extreme cases, to close all windows, and then lock the motor vehicle centrally via a door switch.

The invention is based on the object of simplifying systems of this type, especially with regard to the wiring complexity and to improve the ease of use.

This task is with the characterizing features of the claim 1 solved

The invention is based on the idea that with the electric motor of the window lift system also the door locking element can be actuated if, for example, a coupling is installed between the motor and the window lift system in such a way that the motor can continue its rotary movement, too when the window is blocked, for example closed. This additional rotary movement can be used to drive the door locking element be exploited.

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The electric motor is activated via an additional switch, namely controlled the door switch. This means that all the motors of the window lift systems are switched on at the same time and so that all windows are closed and then all doors are locked. The operation is thereby significantly simplified and increased security. In addition, the wiring effort is considerably reduced because the voltage supply to a drive element is omitted.

In principle, it is conceivable to design the switching arrangement in such a way that, in each case, when the disk moves upwards at the same time the vehicle is also locked and unlocked when moving downwards. Such a design would have the disadvantage that the vehicle can be locked while driving, which is not desired for safety reasons is.

An embodiment is therefore preferred with the features of claim 2, in which the window movement and the door lock run at least partially temporally separated from one another. For example, the door locking element should only respond in the last movement area before closing the window. The solution is even better where as a rule, the door is only locked when the window is closed or when the door is unlocked before the disc moves downwards.

In claims h to 7 different modes of operation are characterized. The embodiment according to FIG. K has the advantage that all windows are actually closed when the doors are locked, but on the other hand the window is not opened at the same time when unlocking. The alternative according to claim 5 enables locking or unlocking via the polarity reversal switch, which was previously only used to operate the window lift system. Claim 6 relates to an

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management with complete separation of functions, while claim 7 allows control of all functions of both switches.

In a first embodiment according to claim 8 is the control option through the XJmpol switch or the additional Switch mainly influenced by the position of a position switch that has a hysteresis that is just corresponds to the range of rotation that is used to actuate the door locking element. When executing with the features of claim i4, however, is through the polarity reversal switch in the neutral position any activation of the Motor via the additional switch.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings, wherein identical components are provided with identical reference numerals.

In the basic circuit diagram according to FIG. 1, 10 are four electric motors denotes, each of which is used to drive a window lift system 11, which is only shown schematically. aside from that these electric motors each serve to operate a Door locking element 12. In our filed at the same time Application (A 12 559) is shown in detail in which way this drive of two adjusting elements can be accomplished by means of a motor. For understanding the function of the switching arrangement according to the invention it is sufficient to know that the motor output is coupled to the window adjustment mechanism until the • The window is blocked, for example it is closed “Then the coupling between the motor and window lift system is released and at the same time the motor is coupled to the locking element. The vehicle can be locked by the engine continuing to turn will. The coupling between the motor and the door locking element remains in place until the vehicle is unlocked again. Only then will the engine start running again Window lift system operatively connected so that the window is lowered can be.

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Each motor 10 has a polarity reversal switch 20, each with two movable ones Contact bridges 21,22 and the fixed contacts 23 to 28 assigned. The fixed contacts 23 and 26 serve as working contacts when the window is opened, the fixed contacts 25 and 28 as working contacts when closing. Contacts 23 and 28 are both to ground 14 and contacts 25 and 27 to the positive ones Pole 15 of a voltage source not shown in detail connected.

In addition, the normally closed contact Zh is still at the positive pole 15 of the voltage source, while the other normally closed contact 27 is connected to a bus line 16. The movable contact bridges 21 and 22 are connected to the lines 18 and 19 leading to the motor 10.

Two additional switches h0 are connected to the bus line 16, which are designed as two-way push-button switches with a zero position. These switches are operated via the door lock on the left and right of the vehicle and switch positive or negative potential to the collecting line. In the illustrated zero position, the collecting line 16 is potential-free.

A position switch 50, which is designed as a snap-action switch with hysteresis, is actuated directly or indirectly by the motor 10. In the working position shown, the contact bridge 51 connects the contact bridge 21 to one terminal 10a of the motor. The position switch assumes this working position during the movement process of the disc and the locking process. Only after completion of the locking operation, the position switch snaps into its rest position in which the motor port 10a mass ■ \ is supplied h. The position switch 50 remains in this rest position until the unlocking process has been completed.

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To explain the mode of operation, the conditions shown in the drawing are initially assumed. the Collector line 16 is potential-free, the vehicle is unlocked, the window is at least partially open. If the polarity reversal switch is now operated in the direction of arrow A, the Motor connection 10a ground and at connection 10b positive potential. The disc is lowered. If the polarity switch is 20 Returned to its neutral position, the engine 10 runs the end. To protect the motor, a thermal protection switch or the like may have to be provided so that it is not overloaded. when the disc runs against its lower stop and the Polarity reversal switch 20 is not reset. If the polarity reversal switch is adjusted in the direction of arrow B, it is connected to connection 10a positive potential and negative potential at connection 10b. The motor 10 rotates in the other direction and the disc is raised. If the window is completely closed, then the door locking element 12 is actuated and the vehicle is locked. After the locking process has been completed, the position switch 50 snaps, as a result of which the motor 10 is short-circuited will.

If the polarity reversal switch is moved again in the direction of arrow A when the vehicle is locked, the motor connection 10b is positive Potential, at connection 10a via contact bridge 51 of position switch 50, ground 14. The vehicle is unlocked. The position switch 50 then jumps back to the position shown Working position, the motor connection 10a now being fed via the contact bridge 21 to ground. Via the polarity switch 20 can therefore in addition to the actual function of opening and Closing the window also unlocks and locks to be triggered.

A switching operation of the additional switch ko only has an influence on the electric motor 10 in the neutral position of the pole reversal switch 20. If the window is open and the position switch is thus in the position shown, there is positive potential at the motor connection 10a. If the switch k0 is now moved in the direction of the arrow A, positive potential is also applied to the other connection, the window is opened

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therefore not possible via the kO switch. If, on the other hand, the switch is switched in the direction of arrow B, there is ground at connection 10b and the motor 10 rotates in such a way that the window is closed and the door is then locked. Since all of the motors are controlled via the bus line i6, it is ensured that the vehicle is effectively locked if only the switch kO is operated for a sufficient period of time.

If the vehicle is locked, the motor connection 10a is connected to ground. Now, when moved in the direction of arrow A, positive potential can be supplied to the motor connection 10b via the switch kO, so that an unlocking process is triggered. After completion of the unlocking process, the position switch 50 jumps and short-circuits the motor. The vehicle can only be locked and unlocked and the windows closed, but not opened, via the additional switch kO.

In the embodiment according to FIG. 2, the wiring in the area of the pole reversal switch 20 is changed. The contact bridges 21, 22 are now connected directly to the positive or negative pole of the voltage source, while the lines 18 and 19 are connected to the fixed contacts 23 and 26, respectively. In addition, another line 13 leads from the normally open contact 25 directly to the motor connection 10b. Another break switch 60 is looped into the line 19, which is closed while the window is moving, but opens as soon as the window is closed. Finally, this embodiment differs from that according to FIG. 1 in that the polarity reversal switch 20 actuates a further contact bridge 61 which connects the additional switch kO to the motor connection 10b. Finally, a timing element 62 is also provided, which ensures that when the switch kO is moved in the direction of arrow A to the contact bridge 6i, positive potential is only switched through for a short time. The function of the position switch 50 corresponds to that according to FIG. 1.

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-1/. A 12 558

/ Μ-

The function of the switch is essential in this design 60, which namely ensures that with the polarity reversal switch 20 only the window is opened or closed, the door but cannot be locked. At a

Adjustment of the pole reversal switch in the direction of arrow B, namely, the motor circuit is interrupted by this switch 60 as soon as the disc runs against the upper stop. So that this open switch 60 can be bridged when the polarity switch is moved in the direction of arrow A to open the window, the additional line 13 is required between the normally open contact 25 and the motor connection 10b. In the neutral position of the pole reversal switch, the door can be unlocked or locked and the window can be closed in the manner already described for FIG. 1. However, it is not possible to open the window using the kO switch *

In the embodiment according to FIG. 3, the circuit in connection with the polarity reversal switch 20 corresponds essentially to that according to FIG. 1, but both normally closed contacts 2k and 2 are connected to a control unit 70 or two bus lines 16 and 16 '. This control unit 70 has two relays 71 and 72, one connection of which is each connected to ground 14 and the other connections of which can be switched alternately to positive potential via the additional switch ^ O. The respectively energized relay switches positive potential to the associated bus line or the normally closed contact Zk or 27 via its contact bridge 73 and 7k , while the non-energized relay switches through ground. It can thus be seen that in the rest position shown of the pole reversal switch 20, the motor can be controlled in both directions of rotation by actuating the additional switch ko , and thus the window can be opened and closed and the door can be locked and unlocked.

The position switch 50 can be a delay switch, which is designed mechanically or electrically so that it only responds to an unlocking process and in its working

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position briefly short-circuits the motor. Otherwise it is in the rest position shown, in which the motor circuit is closed. This is intended to ensure that the current flow to the motor is briefly interrupted during an unlocking process as soon as the vehicle is unlocked. If the driver resets the switch kO to the zero position at this moment, the window remains closed. Since the position switch automatically jumps back to its rest position after a delay time, the driver can also open the window by pressing the switch again or by pressing the switch kO for a longer period of time, which is particularly advantageous in summer when the air in the vehicle interior is very hot.

The switch 50 could also be designed so that he too responds briefly when closing the window. ¥ ¥ If switch 40 is reset to the zero position during this response time, you can thus ensure that the door is not locked inadvertently. Such a delay switch thus enables further variations in the mode of operation.

A timer is indicated at 75, which is triggered by the switch kO during the locking process and is reset during unlocking. This timing element is intended to ensure that all windows are closed and the motor vehicle is locked even if the switch 40 is only actuated briefly. This timer 75 is therefore used for ease of use, because it stores the switching state of the switch 40 for a certain time.

In addition, an inertia switch is indicated at 76, the positive potential switches through to the unlocking relay 72, as soon as the vehicle is decelerated excessively, for example in the event of an accident. This immediately starts an unlocking process initiated.

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To Pig. 1 it is additionally pointed out that the Motor 10 · to lock the trunk or the bonnet can serve.

Finally, it should not go unmentioned that, of course, also in the remarks after Pig. 1 and 2 switching amplifiers for example by means of relays can be used, so that the contact load of these switches 40, which is the case with the drawings Embodiments of the operating current of several motors must lead is reduced.

All of the exemplary embodiments shown in the drawings solve the problem set out at the beginning. They are different only in the mode of operation and, of course, also in the circuit complexity associated with it. For example, in FIG. 3 Only two cables are required between polarity reversal switch and motor, with Pig. 1 an additional ground line. at the embodiment according to Fig. 2, however, five lines are required, but with this version, however, there is perhaps the best separation of the functions from the polarity reversal switch or the additional switches are triggered.

Of course, further improvements are possible in all versions, for example in the direction that a current evaluation circuit every motor is switched off as soon as the window is closed and the door is locked. This brings energy savings compared to the designs shown, in which individual motors continue to absorb the increased load current until all motors have completed their movement process.

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Claims (1)

SWF special factory " TiXv Aut öz'uoehö r Gustav Rau GmbH. 7120 Bietigheim-Bissingen PAL / A 12 558 Kübler / Tü December 6, 1978 Patent claims: Switching arrangement for an electric motor, which is reversible in direction of rotation and is fed from a voltage source, for driving a window lift system in motor vehicles, which can be switched on via a polarity reversal switch with two working positions and one rest position, characterized in that the electric motor (10) in a certain range of its rotary movement is also used to drive a door locking element ( 13) is used and that the electric motor (1O ) can be controlled via an additional switch (ho). 2.Schaltordnung according to claim 1, characterized in that the area of the rotary movement in which the door locking element (12) is driven at least partially adjoins or precedes the area of the rotary movement in which the window lifting system (11) is operated. 3.Switching arrangement according to claim 1 or 2, characterized in that that the locking and unlocking process only with a standing window, in particular only when it is closed Window is possible. ^ .Switching arrangement according to the preceding claims, characterized marked that via the additional switch ('4O) the Closing the window and locking and unlocking the door can be accomplished. 030028/0033 -Z- . ^. A 12 558 5. Switching arrangement according to at least one of the preceding claims, characterized in that the polarity reversal switch (2O) in addition to opening and closing the window and the Locking and unlocking the door can be accomplished. 6. Switching arrangement according to claims 1 to 3, characterized in that only the window lifting system (11) via the polarity reversal switch (20) and only the door locking element (i2) can be operated via the additional switch (AO). 7. Switching arrangement according to claim 1 or 2, characterized in that that both via the polarity reversal switch (20) and via the additional switch (4o) both independently of one another the window lifting system (11) and the door locking element (12) can be operated. 8. Switching arrangement according to the preceding claims, characterized in that the first connection (iOa) of the motor (10) is connected to a position switch (50) which is directly or indirectly actuated by it and is designed as a snap-action switch with hysteresis and which is in a working position during the window movement occupies and after the end of the locking process snaps into its rest position and after the end of the unlocking process back into its working position, and that in the rest position of the pole reversal switch (20) the second connection of the motor (iOb) via the additional switch (ko ) and the first connection (iOa) of the motor (10) is connected to one or the other pole of the voltage source as a function of the switching position of the position switch (50). 9. Switching arrangement according to claim 8, characterized in that in the rest position of the pole reversal switch (20) via a contact bridge (22) of the second connection (iOb) of the motor (10) is connected directly to the additional switch (kO ). 030028/0033 / ι ^{A 12 558} 10.Schalt arrangement according to claim 8, characterized in that the polarity reversal switch (20) has a third contact bridge (61) via which the polarity reversal switch is in the rest position (20) the second motor connection (iOb) is connected to the additional switch (^ 0). 11. Switching arrangement according to claim 9 »characterized in that the two contact bridges (21,22) of the pole reversal switch (20) are connected to the lines leading to the motor (18,19) that the working contacts (23,28; 25,26) of the polarity reversal switch (20) are alternately connected to the positive or negative pole of the voltage source and that one break contact (2k) is connected to one pole (15) of the voltage source and the other break contact (22) is connected to the additional switch (ko) and that the position switch (50) in the rest position supplies the other potential (1 * 0 of the voltage source) to one motor connection (iOa). 12. Switching arrangement according to claim 10, characterized in that the two contact bridges (21,22) of the polarity reversal switch (20) are connected to the positive or negative pole of the voltage source, that of the contact bridges (22,21) at the same time controlled working contacts (26 , 23; 2825) are connected to one another and are connected to the lines (18,19,16) leading to the motor and that a break contact (2k) is connected to the motor line (18) leading to the position switch (50). ^ • Switching arrangement according to claim 12, characterized in that between the second connection (iOb) of the motor (1O) and one Normally open contact (26) of the pole reversal switch (20) is looped in a further break switch (60) which during the window movement closed is. 14. Switching arrangement according to claims 1 to 7 »characterized in that in the ~ rest position of the polarity reversal it s (20) via the two contact bridges leading to the motor lines (18,19) are connected to a control unit (70), which Depending on the switching position of the additional switch (ko), it short-circuits the motor or alternately supplies positive or negative potential to the motor connections (10a, 10b). _ft , _{n Π 0} β, _nn ^ - / - A 12 558 15 · Switching arrangement according to claim 14, characterized in that A position switch (5O) looped into the motor circuit which responds to an unlocking process and briefly short-circuits the motor in its working position, but automatically after a delay time has elapsed jumps back into its rest position, in which the motor circuit closed is. 16. Switching arrangement according to claim 15 »characterized in that the position switch (50) responds even when the window is closed and in its working position, the engine briefly shuts down for a short time. 17 · Switching arrangement according to at least one of the preceding claims, characterized in that the additional switch (ko ) can trigger at least one timing element (75) which stores the switching signal triggered by the switch (4o) for a certain time. 18. Switching arrangement according to the preceding claims, characterized characterized in that several motors (1O) can be controlled simultaneously via at least one additional switch (4o) and that each motor (OK) is assigned a polarity reversal switch (20) is. ^ • Switching arrangement according to at least one of the preceding claims, characterized in that an unlocking process can be triggered by an inertia switch (76). 030028/0033